chore(deps): update build tools

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
html-webpack-plugin	devDependencies	minor	4.4.1 -> 4.5.0
postcss-loader	devDependencies	patch	4.0.1 -> 4.0.2
terser-webpack-plugin	devDependencies	patch	4.2.0 -> 4.2.2
ts-loader	devDependencies	patch	8.0.3 -> 8.0.4
webpack	devDependencies	patch	4.44.1 -> 4.44.2
webpack-bundle-analyzer	devDependencies	minor	3.8.0 -> 3.9.0

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Release Notes

jantimon/html-webpack-plugin

v4.5.0

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Features

• Add publicPath option to overrule the default path generation (#​1516) (19b5122)
• update webpack dependency range to allow installing webpack 5 beta (f3ccdd5), closes #​1504

4.4.1 (2020-08-30)

Bug Fixes

• broken typings.d.ts in v4.4.0 (#​1503) (98ad756)

webpack-contrib/postcss-loader

v4.0.2

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webpack-contrib/terser-webpack-plugin

v4.2.2

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v4.2.1

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TypeStrong/ts-loader

v8.0.4

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• Uses existing instance if config file is same as already built solution - thanks @​sheetalkamat

webpack/webpack

v4.44.2

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Bugfixes

• make sure to generate correct chunk connection for blocks that are only connected in some runtimes
  • fixes a bug where filename contains undefined hash at runtime

webpack-contrib/webpack-bundle-analyzer

v3.9.0

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• New Feature
  • Adds option reportTitle to set title in HTML reports; default remains date of report generation (#​354 by @​eoingroat)
• Improvement
  • Added capability to parse bundles that have child assets generated (#​376 by @​masterkidan and #​378 by @​https://github.com/dabbott)

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